Cita APA

Cummings gordan. (1963). Investment/7e (7th ed.). Penguin books.

Citación estilo Chicago

Cummings gordan. Investment/7e. 7th ed. Asstralia: Penguin books, 1963.

Cita MLA

Cummings gordan. Investment/7e. 7th ed. Penguin books, 1963.